remove ambiguous set

hard to find the MASS one I guess; some 3d one exists which is difficult
add Paul Graham spam readings
move post-question to right place
add general prompt
switch to reading-specific questions
add cross-val exercise
add nice eval metrics section
leave a note for later
much more bayes and elevator pitches
wording/typos
slides may be ready
specify file in repo
fix dir name
caret confusionMatrix better noted
initial import of linear slides
pull in resources for logistic
refs to Tibsharini books
add d3 git thing from John
add pROC reference
note on matching metric and goal